CORONAVIRUS researchers have concluded one of the world's largest studies of Covid booster shots to determine whether a third dose of the vaccine is effective against the Delta variant.
Monday, 1 November 2021
Coronavirus bombshell as study of 1.4 million shows 'convincing' Pfizer vaccine efficiency
CORONAVIRUS researchers have concluded one of the world's largest studies of Covid booster shots to determine whether a third dose of the vaccine is effective against the Delta variant.
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